CVE-2026-59308
Semantic Cache Cross-Tenant Isolation Bypass via SHA-256 Truncation
MEDIUM
4.3
CVSS Score
Published: August 21, 2026 at 12:07 PM UTC
Updated: October 16, 2026 at 03:10 PM UTC
2 products affected across 2 vendorsSpring AISpring AI
Using Spring AI by Spring?
Get instant alerts when new vulnerabilities affect Spring AI - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
Description
In Spring AI's Semantic Cache support, the context hash used to isolate cached responses between different system prompts could allow cached responses to be shared across unrelated contexts. Affected versions: Spring AI: 2.0.0
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusANALYZED
CWE
CWE-668
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card